<template>
  <div class="one">
    <div class="two">
      <div class="there">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单 -->
      <el-form
        ref='duixiang'
        :model="form"
        :rules="rules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="form.username"
            prefix-icon="el-icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="form.password"
            prefix-icon="el-icon-goods"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btn">
          <el-button type="primary" @click='login'>登录</el-button>
          <el-button type="info" @click='duixiang'>重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  props: {},
  data() {
    return {
      form: {
        username: "admin",
        password: "123456",
      },
      // 表单验证规则
      rules: {
        // 验证用户名是否规则
        username: [
          { required: true, message: "请输入登录名称", trigger: "blur" },
          { min: 2, max: 15, message: "长度在 2 到 15 个字符", trigger: "blur" },
        ],
        // 验证密码是否合法
        psssword: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 20, message: "长度在 6 到 20 个字符", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    duixiang(){
        this.$refs.duixiang.resetFields();
    },
    login(){
        this.$refs.duixiang.validate(async valid=>{
            if(!valid) return;
            const {data: res} = await this.$http.post('login', this.form);
            // console.log(res);
            if(res.meta.status !==200) return this.$message.error('登录失败');
            this.$message.success('登录成功');
            // 1将登录成功之后的 token，保存到到客户端 sessionStorage中
            // 项目中除了登录之外的其它API接口，必须在登录之后才能访问
            // token只应在当前网站打开期间生效，所以将 token保存在sessionStorage中
            // console.log(res);
            window.sessionStorage.setItem('token',res.data.token);
            // 通过编程式导航跳转到后台主页，路由地址是 /home
            this.$router.push('/home');
        })
    }
  },
  components: {},
};
</script>

<style scoped lang="less">
.one {
  background-color: #2b4b6b;
  height: 100%;
}
.two {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .there {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    padding: 10px;
    border-radius: 50%;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
  .btn {
    display: flex;
    justify-content: flex-end;
  }
}
</style>
